%        File: test.tex
%     Created: 五 12 31 09:00 上午 2010 C
% Last Change: 五 12 31 09:00 上午 2010 C
%
\documentclass[a4paper]{article}
\begin{document}

\part{part 1}

\section{section1}

\subsection{subsection1}

\textbf{the text is bold}
\begin{center}
  centered
\end{center}

\begin{flushleft}
  flushleft
\end{flushleft}

\begin{flushright}
  flushright
\end{flushright}

\begin{enumerate}
\item item one
\item item one
\item item one
\item item one

\end{enumerate}

\begin{equation}
  \alpha + \beta = \gamma
  \label{equiation}
\end{equation}

\begin{verbatim}
    text in verbatim mode
\end{verbatim}

\begin{equation}
  \alpha + \beta \equiv \bigcup \Phi \Gamma \Lambda \Xi \Psi \Upsilon \Omega
  \label{greek letters}
\end{equation}
\begin{equation}
  \hat{1}
  \frac{\Phi}{\Gamma}
  \label{one}
\end{equation}
\section{new section}

\subsection{sub section}
\begin{equation}
  \Gamma \equiv \Phi
  \frac{\lambda}{\pi}
  \alpha
  \beta
  \beta
  \label{label}
\end{equation}

\end{document}


